Wildfire Zones: Mission Viejo vs Newport Beach
How do wildfire zones rules compare between Mission Viejo, CA and Newport Beach, CA?
Mission Viejo and Newport Beach have similar restriction levels.
Mission Viejo, CA
Orange County
Portions of Mission Viejo along the eastern and southern hillside edges are designated as Very High Fire Hazard Severity Zones by CAL FIRE and OCFA. Properties in these zones must maintain 100 feet of defensible space, use fire-resistant building materials, and comply with OCFA vegetation management inspection programs. Annual brush clearance is required before fire season.
View full Mission Viejo rules →Newport Beach, CA
Orange County
Portions of Newport Beach, particularly the hillside areas of Newport Coast and San Joaquin Hills, are designated as Very High Fire Hazard Severity Zones. Properties in these areas face enhanced building, landscaping, and brush clearance requirements under NBMC and California fire code.
View full Newport Beach rules →Key Facts Comparison
| Fact | Mission Viejo | Newport Beach |
|---|---|---|
| Defensible Space | 100 feet required from structures | 100 feet per PRC 4291 |
| Zone 1 Clearance | 0–30 feet, remove all combustibles | - |
| Inspections | Annual OCFA vegetation management checks | - |
| Building Materials | Class A roof, fire-resistant per CBC Ch. 7A | - |
| Inspection Period | April through June annually | - |
| Designation | - | Very High Fire Hazard Severity |
| Key Areas | - | Newport Coast, San Joaquin Hills |
| Construction | - | CBC Chapter 7A required |
| NB Fire | - | (949) 644-3104 |
Highlighted rows indicate differences between cities.
Mission Viejo FAQ
Is my Mission Viejo property in a wildfire hazard zone?
Properties along the eastern hillsides near Trabuco Canyon and areas near Oso Parkway may be in a Very High Fire Hazard Severity Zone. Check the CAL FIRE hazard severity zone map or contact OCFA Community Risk Reduction at (714) 573-6000 for your specific address.
What does defensible space clearance require?
Within 30 feet of your home, remove all dead vegetation, dry leaves, and combustible materials. From 30 to 100 feet, reduce and space vegetation to slow fire spread. Trees should be limbed up 6 feet from the ground and spaced so canopies do not touch.
When does OCFA inspect for brush clearance?
OCFA typically conducts vegetation management inspections from April through June. Property owners in designated zones receive written notices with a compliance deadline. Contact OCFA at (714) 573-6000 if you have questions about your inspection schedule.
Newport Beach FAQ
Is my Newport Beach property in a wildfire zone?
Properties in Newport Coast, Crystal Cove, and the San Joaquin Hills are typically in Very High Fire Hazard Severity Zones. Check with NB Fire at (949) 644-3104 for your specific address.
What building requirements apply in fire zones?
CBC Chapter 7A requires Class A roofing, ember-resistant vents, tempered glass, and non-combustible materials within 5 feet of the structure for new construction.
How much brush clearance is required?
PRC 4291 requires 100 feet of defensible space around structures. NB Fire conducts annual inspections in designated fire hazard zones.
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